and trail leading into the Angeles National Forest was damaged or destroyed by erosion and landslides. About 190 men had to be evacuated from one of the CCC camps, near Vogel Flats, using a cable strung across Big Tujunga Canyon. The Tujunga Wash reached its peak flow on March 3, with a water flow of an estimated . Upper Big Tujunga Canyon was "all but swept clean of structures that were not up above the flood line". In the San Fernando Valley, the floodwaters swept through many areas after escaping the normal channels of Tujunga Creek and its tributaries. Waters reached deep into the valley, the Pacoima Wash flooded Van Nuys; five people died when the Lankershim Boulevard bridge collapsed at Universal City, just below the confluence of Tujunga Wash and the LA River. The flooding would have been much worse had a large debris flow not been halted at Big Tujunga Dam; Sam Browne, dam keeper during the 1938 flood, wrote that "Large oak trees several hundred years old rushed down the canyon like kindling... If this dam had never been built, there is no telling what would have happened to Sunland, and the city of Tujunga and the northern end of Glendale." San Gabriel Valley On the San Gabriel River, dams built prior to 1938 greatly reduced the magnitude of flooding. Along the West Fork the floodwaters first hit Cogswell Dam, which had been completed just four years earlier in 1934. Cogswell moderately reduced the flood crest on the West Fork, which further downstream joined with the undammed East Fork to peak at more than . The floodwaters poured into the reservoir of the still incomplete San Gabriel Dam, filling it over the night of March 2-3 and overtopping the emergency spillway. The maximum release from San Gabriel was held at , while the downstream Morris Dam further reduced the peak, to about . As a result, much of the San Gabriel Valley were spared from flooding, although heavy damage still occurred in some areas. In Azusa, four spans of the 1907 "Great Bridge" along the Monrovia–Glendora Pacific Electric line, which had survived the San Gabriel's seasonal flooding for over 30 years, were swept away in the torrent. Along the East Fork of the San Gabriel River, flooding obliterated much of a new highway that was intended to connect the San Gabriel Valley to Wrightwood. The southern stub